Centering processing method and device for inner stator of generator, electronic equipment and program product

Abstract

The invention belongs to the technical field of generators, and provides a centering processing method and device for an inner stator of a generator, electronic equipment and a program product. According to the station transfer matrix, aligning coordinate systems of two laser trackers arranged at two ends of an inner stator of the generator; after the coordinate systems of the two laser trackers are aligned, the two laser trackers are controlled to collect coordinate information of a plurality of targets installed at the two ends of an outer stator of the generator respectively and coordinate information of a plurality of targets installed at the two ends of an iron core of an inner stator respectively; according to the coordinate information of the multiple targets installed at the two ends of the outer stator and the coordinate information of the multiple targets installed at the two ends of the iron core of the inner stator, the end face circle center position of the inner stator and the end face circle center position of the outer stator are determined; and feeding back centering indication information related to the inner stator according to the relative position relationship between the end face circle center position of the inner stator and the end face circle center position of the outer stator.

Description

Technical Field

[0001] The present application belongs to the technical field of generators, and more specifically, relates to a method, device, electronic equipment, and program product for centering an inner stator of a generator. Background Art

[0002] In the field of generators, for example, large generators with inner and outer stators often need to replace the inner stator when the generator reaches the end of its service life to ensure continued operation. Traditional stator replacement processes have many problems when measuring the stator center.

[0003] For example, the traditional stator center measurement solution of an optical alignment instrument requires pausing and having a professional optical surveyor readjust the optical alignment instrument after each adjustment of the inner stator position to verify the center position of the inner stator. This makes the process of determining the inner stator center time-consuming and difficult to intuitively and dynamically feedback the position change information of the inner stator to the operator. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a method, device, electronic equipment and program product for centering the internal stator of a generator, aiming to solve the technical problem that the existing generator internal stator centering solution cannot provide feedback on the position change information of the internal stator to the operator.

[0005] To achieve the above objectives, according to a first aspect of the present application, a method for centering an inner stator of a generator is provided, the method comprising:

[0006] Obtaining a transfer matrix of a generator, wherein an inner stator and an outer stator of the generator are coaxially arranged, and the inner stator is located inside the outer stator;

[0007] According to the transfer matrix, align the coordinate systems of the two laser trackers set at both ends of the inner stator, wherein one laser tracker is set at each end of the inner stator;

[0008] After aligning the coordinate systems of the two laser trackers, controlling the two laser trackers to respectively collect coordinate information of multiple targets installed at both ends of the outer stator, and coordinate information of multiple targets installed at both ends of the iron core of the inner stator;

[0009] Determine the center position of the end face of the inner stator and the center position of the end face of the outer stator based on the coordinate information of multiple targets respectively installed at both ends of the outer stator and the coordinate information of multiple targets respectively installed at both ends of the iron core of the inner stator;

[0010] According to the relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator, centering indication information related to the inner stator is fed back.

[0011] In one possible implementation, obtaining the transfer matrix of the generator includes:

[0012] Determining multiple inner cavity surfaces of the inner stator and a transfer station on each inner cavity surface, wherein each transfer station is pre-set with a target, and the multiple cavity surfaces are respectively in different planes;

[0013] controlling a first laser tracker of the two laser trackers to acquire first spatial position coordinates of a target at each rotation station from a first end of the inner stator, and controlling a second laser tracker of the two laser trackers to acquire second spatial position coordinates of a target at each rotation station from a second end of the inner stator;

[0014] A transfer station matrix is ​​calculated based on the first spatial position coordinates and the second spatial position coordinates of the target at each transfer station.

[0015] In one possible implementation, after calculating the transfer station matrix based on the spatial position coordinates of the target at each transfer station, the method further includes:

[0016] Determine a verification point on the surface of each inner cavity of the inner stator, wherein each verification point is used to represent a new position point to which the target on each transfer station moves;

[0017] Controlling the first laser tracker to acquire the third spatial position coordinates of the target at each verification point, and controlling the second laser tracker to acquire the fourth spatial position coordinates of the target at each verification point;

[0018] According to the transfer matrix, the third spatial position coordinates of the target at each verification point are converted from the coordinate system of the first laser tracker to the coordinate system of the second laser tracker to obtain the fifth spatial position coordinates;

[0019] Determine whether the transfer matrix meets the requirements based on the fourth spatial position coordinates and the fifth spatial position coordinates of the target at each verification point;

[0020] If it is determined that the transfer matrix meets the standards, the transfer matrix is ​​saved; if it is determined that the transfer matrix does not meet the standards, the transfer matrix is ​​re-verified or re-calculated to obtain a new transfer matrix that meets the standards.

[0021] In one possible implementation, determining whether the transfer matrix meets the requirements based on the fourth spatial position coordinates and the fifth spatial position coordinates of the target at each verification point includes:

[0022] Comparing the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point to obtain an error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point;

[0023] When the error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point is less than or equal to a predetermined value, it is determined that the transfer matrix meets the requirements;

[0024] When the error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at any verification point is greater than a predetermined value, it is determined that the transfer matrix does not meet the standards.

[0025] In one possible implementation, controlling two laser trackers to respectively collect coordinate information of multiple targets mounted at both ends of the outer stator and coordinate information of multiple targets mounted at both ends of the iron core of the inner stator includes:

[0026] Determining a plurality of targets mounted on each end cap of an outer stator of the generator, and a plurality of targets mounted on each end of an iron core of an inner stator, wherein an end cap is provided at each end of the outer stator, and the iron core is a component of the inner stator for providing a magnetic circuit;

[0027] controlling the first laser tracker to collect sixth spatial position coordinates of a plurality of targets respectively mounted on a first end cap of the outer stator, and seventh spatial position coordinates of a plurality of targets respectively mounted on a first end of an iron core of the inner stator, wherein the first end cap of the outer stator is aligned with the first end of the iron core, and the second end cap of the outer stator is aligned with the second end of the iron core;

[0028] The second laser tracker is controlled to collect the eighth spatial position coordinates of the multiple targets respectively installed on the second end cover of the outer stator, and the ninth spatial position coordinates of the multiple targets respectively installed on the second end of the iron core of the inner stator.

[0029] In one possible implementation, based on the relative positional relationship between the center position of the end face of the inner stator and the center position of the end face of the outer stator, feedback of alignment indication information related to the inner stator includes:

[0030] Determine whether the center position of the inner stator's end face meets the predetermined centering requirement based on the relative positional relationship between the center position of the inner stator's end face and the center position of the outer stator's end face;

[0031] When the center position of the end face of the inner stator does not meet the predetermined centering requirement, determining at least one of an adjustment direction and an adjustment amount of the inner stator according to the relative position relationship;

[0032] Feedback position adjustment information related to the inner stator based on at least one of an adjustment direction and an adjustment amount of the inner stator, wherein the position adjustment information is used to indicate that the position of the inner stator is adjusted based on at least one of the adjustment direction and the adjustment amount to obtain an inner stator after the adjustment;

[0033] When the center position of the end face of the inner stator meets the predetermined centering requirement, installation instruction information related to the inner stator is fed back.

[0034] In one possible implementation, after feeding back the position adjustment information of the inner stator according to at least one of the adjustment direction and the adjustment amount of the inner stator, the method further includes:

[0035] Controlling two laser trackers to collect new coordinate information of multiple targets respectively installed at both ends of the inner stator core after position adjustment;

[0036] Determine the center position of the end face of the inner stator and the center position of the end face of the outer stator after the adjustment based on the coordinate information of the multiple targets respectively installed at both ends of the outer stator and the new coordinate information of the multiple targets respectively installed at both ends of the iron core of the inner stator after the adjustment;

[0037] Determining a new relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator after the adjustment;

[0038] If the position of the center of the end face of the inner stator after the adjustment is determined according to the new relative position relationship does not meet the predetermined alignment requirement, determining at least one of an adjustment direction and an adjustment amount of the inner stator after the adjustment is determined according to the new relative position relationship;

[0039] According to at least one of the adjustment direction and the adjustment amount of the inner stator after the position adjustment, position adjustment information related to the inner stator after the position adjustment is fed back until the end face center position of the inner stator after the position adjustment meets the predetermined alignment requirement.

[0040] According to a second aspect of the present application, a device for centering an inner stator of a generator is provided, the device comprising:

[0041] an acquisition unit, configured to acquire a transfer matrix of a generator, wherein an inner stator and an outer stator of the generator are coaxially arranged, and the inner stator is located inside the outer stator;

[0042] an alignment unit, configured to align the coordinate systems of two laser trackers disposed at both ends of the inner stator according to the transfer matrix, wherein one laser tracker is disposed at each end of the inner stator;

[0043] a control unit for controlling the two laser trackers to respectively collect coordinate information of a plurality of targets mounted at both ends of the outer stator and coordinate information of a plurality of targets mounted at both ends of the iron core of the inner stator after aligning the coordinate systems of the two laser trackers;

[0044] a determination unit, configured to determine the center position of the end face of the inner stator and the center position of the end face of the outer stator based on the coordinate information of the multiple targets respectively installed at both ends of the outer stator and the coordinate information of the multiple targets respectively installed at both ends of the iron core of the inner stator;

[0045] The feedback unit is used to feed back alignment indication information related to the inner stator based on the relative position relationship between the end face center position of the inner stator and the end face center position of the outer stator.

[0046] The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0047] According to a third aspect of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the electronic device implements any one of the methods.

[0048] According to a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any one of the methods is implemented.

[0049] According to a fifth aspect of the present application, a computer program product is provided. When the computer program product is run on an electronic device, the electronic device executes any one of the methods in the first aspect.

[0050] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0051] The generator's inner stator alignment method provided in an embodiment of the present application first obtains the generator's transfer matrix. Based on the transfer matrix, the coordinate systems of two laser trackers installed at either end of the inner stator are aligned. A laser tracker is installed at each end of the inner stator to eliminate coordinate system differences between the different laser trackers, placing them under the same measurement reference and ensuring that measurement results from the different laser trackers can be processed within the same coordinate system. After aligning the coordinate systems of the two laser trackers, the two laser trackers are controlled to collect coordinate information from multiple targets installed at each end of the outer stator, as well as coordinate information from multiple targets installed at each end of the inner stator's core.

[0052] Since the coordinate systems of the two laser trackers have been aligned, the end face center positions of the inner stator and the outer stator can be determined based on the coordinate information of multiple targets installed at both ends of the outer stator and the coordinate information of multiple targets installed at both ends of the iron core of the inner stator. Finally, based on the relative positional relationship between the end face center positions of the inner stator and the end face center positions of the outer stator, the centering indication information related to the inner stator is fed back to provide clear guidance information for the operator to adjust or install the inner stator. Furthermore, the operator can adjust the center position of the inner stator according to the centering indication information, thereby improving the centering efficiency, reducing the risk of the inner stator being temporarily supported by the jack, and at the same time eliminating the errors introduced by manual measurement, thereby improving the operating stability and performance of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0054] Figure 1 This is a flow chart of a method for centering an inner stator of a generator provided in an embodiment of the present application;

[0055] Figure 2 This is a schematic diagram of an optional installation of a laser tracker provided in an embodiment of the present application;

[0056] Figure 3 This is a flow chart of an optional method for centering the inner stator of a generator provided in an embodiment of the present application;

[0057] Figure 4 This is a flow chart of an optional method for centering the inner stator of a generator provided in an embodiment of the present application;

[0058] Figure 5 This is a flow chart of an optional method for centering the inner stator of a generator provided in an embodiment of the present application;

[0059] Figure 6a This is an optional two-dimensional graph feedback method provided in the embodiment of the present application;

[0060] Figure 6b This is an optional form feedback method provided in the embodiment of the present application;

[0061] Figure 7 This is a flow chart of an optional method for centering the inner stator of a generator provided in an embodiment of the present application;

[0062] Figure 8 This is a two-dimensional schematic diagram of an optional position of the end center of an inner stator and the end center of an outer stator provided in an embodiment of the present application;

[0063] Figure 9 This is a schematic structural diagram of a generator inner stator centering processing device provided in an embodiment of the present application;

[0064] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0066] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0067] It should also be understood that in the description of this application, unless otherwise specified, the “ / ” used in the specification of this application and the appended claims indicates that the objects associated with each other are in an “or” relationship. For example, A / B can represent A or B. The “and / or” in this application is merely a description of the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of this application, unless otherwise specified, “multiple” means two or more than two. “At least one of the following items” or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or plural.

[0068] In addition, to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity or execution order, but are only used to distinguish the description. In addition, words such as "first" and "second" do not necessarily define differences, nor should they be understood to indicate or imply relative importance.

[0069] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0070] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0071] First, some of the terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0072] The transfer matrix, transfer points, and verification points have specific meanings and functions in the generator internal stator alignment scheme, as follows:

[0073] Transfer matrix: It is a matrix obtained through mathematical matrix calculation. Its function is to transform the coordinate point data of one laser tracker into the coordinate system of another laser tracker, thereby aligning the coordinate systems of the two laser trackers.

[0074] Rotation points are the target spheres fixed to the inner surface of the stator. Two laser trackers collect coordinate data for the target spheres at each rotation point, which is then used to calculate the rotation matrix. For example, when collecting data from six target spheres, the six rotation points must not be in the same plane to ensure the accuracy and reliability of the rotation matrix calculation.

[0075] Verification Point: A point used to verify the accuracy of the transfer matrix during the calculation process. After collecting transfer points and calculating the transfer matrix, move the target to a new location as a verification point.

[0076] It should be understood that in the generator application scenario, the meanings of steam side, excitation side, window side, and upper side are as follows:

[0077] Steam side: This refers to the end of the generator that connects to the steam turbine. The generator is typically driven by the steam turbine to generate electricity, so the side connected to the turbine is called the steam side.

[0078] Excitation side: This is the end where the excitation device is installed. The excitation device is used to provide a magnetic field for the generator rotor, enabling the generator to generate electricity normally, so this end is called the excitation side.

[0079] Window side: Generally refers to the side of the generator housing with the heat dissipation window. When the generator is running, heat is generated, which needs to be dissipated through the heat dissipation window. This side with the heat dissipation window is called the window side.

[0080] Upper side: usually refers to the upper part of the generator in the vertical direction. For example, when describing the installation position of certain components of the generator or observing the overall layout of the generator, the part that is higher than the bottom or other sides can be called the upper side.

[0081] The above is a brief introduction to the nouns involved in the embodiments of this application, and no further details will be given below.

[0082] In the field of generators, for example, large generators with inner and outer stators often need to replace the inner stator when the generator reaches the end of its service life to ensure continued operation. Traditional stator replacement processes have many problems when measuring the stator center.

[0083] For example, the stator center measurement solution of the traditional optical alignment instrument requires the installation of multiple (for example, 4 or more) brackets on the large end cover and both ends of the inner stator of the generator. The installation of these brackets not only requires manual measurement of the center degree, which is time-consuming and easily introduces measurement deviations. Moreover, if the brackets at both ends of the inner stator are improperly installed, it will also cause damage to the iron core of the inner stator. After installing multiple brackets, when measuring the front and rear large end covers and the center of the inner stator, it is necessary to adjust the four corners of the inner stator using a hydraulic jack based on the center deviation feedback. After each adjustment, it is necessary to stop and let professional optical surveying personnel readjust the optical alignment instrument to verify the center position, making the process of determining the center of the inner stator time-consuming and difficult to dynamically track the alignment status. At the same time, the stator weighing hundreds of tons relies on jacks for long-term support, which poses a high risk.

[0084] Therefore, a new generator stator alignment solution is needed to eliminate the risks of extended construction time and installation deviations associated with the bracket installation process. It also addresses the technical challenges of slow stator center measurement and the influence of human error. The solution also improves alignment efficiency, provides a dynamic and intuitive understanding of the stator center status, and reduces the risk of long-term temporary support of the stator. Furthermore, the solution provides operators with intuitive and dynamic information on stator position changes, improving efficiency and reducing the risk of long-term temporary support of the stator.

[0085] In order to solve the above technical problems, this application example provides an example of a method for centering the inner stator of a generator, please refer to Figure 1 As shown, Figure 1 A schematic flow chart of a method for processing internal stator alignment of a generator provided by the present application is shown. By way of example and not limitation, the method can be applied to or run in an electronic device running stator alignment software. The method includes:

[0086] S101 , obtaining a transfer station matrix of a generator, wherein an inner stator and an outer stator of the generator are coaxially arranged, and the inner stator is located inside the outer stator.

[0087] S102 , aligning the coordinate systems of two laser trackers disposed at both ends of the inner stator according to the transfer station matrix, wherein one laser tracker is disposed at each end of the inner stator.

[0088] S103, after aligning the coordinate systems of the two laser trackers, controlling the two laser trackers to respectively collect coordinate information of multiple targets installed at both ends of the outer stator and coordinate information of multiple targets installed at both ends of the iron core of the inner stator.

[0089] S104, determining the center position of the end face of the inner stator and the center position of the end face of the outer stator according to the coordinate information of multiple targets respectively installed at both ends of the outer stator and the coordinate information of multiple targets respectively installed at both ends of the iron core of the inner stator.

[0090] S105 , feeding back centering indication information related to the inner stator based on the relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator.

[0091] In some examples, in a generator with an inner and outer stator structure, the inner stator of the generator is coaxially nested with the outer stator, and the inner stator is located in the inner space of the outer stator. Figure 2 As shown, a laser tracker can be installed at each end of the inner stator, that is, Figure 2Laser Tracker 1 and Laser Tracker 2 in the stator. In some examples, each laser tracker can be pre-connected and initialized using stator alignment software. To ensure consistent measurement standards across different laser trackers, multiple locations on the inner surface of the stator cavity can be selected as transfer points, each located in a different cavity plane. A target can be securely mounted at each transfer point.

[0092] In some examples, stator alignment software can be used to control two laser trackers to separately collect the coordinate information of the target at each transfer station. Based on the coordinate information of the target at each transfer station, mathematical algorithms and matrix operations are used to calculate the transfer station matrix that can realize the conversion of different laser tracker coordinate systems.

[0093] Since each laser tracker has its own initial coordinate system, once the transfer matrix is ​​determined, it can be used to align the coordinate systems of the two laser trackers, one at each end of the inner stator. Using the transfer matrix as the transformation relationship between different coordinate systems, matrix operations are used to convert coordinate data from one laser tracker's coordinate system to the other's.

[0094] In some examples, a laser tracker is installed at each end of the stator in the generator. The coordinate systems of the two laser trackers are aligned through the calculation of the transfer matrix, eliminating the coordinate system differences between different laser trackers and placing them under the same measurement reference, thereby ensuring that the measurement results of different laser trackers can be processed in the same coordinate system.

[0095] In some examples, multiple targets are pre-installed at both ends of the outer stator, and multiple targets are also installed at both ends of the inner stator core. Once the coordinate systems of the two laser trackers are aligned, the two laser trackers are controlled to each collect coordinate information for the multiple targets installed at both ends of the outer stator, as well as the multiple targets installed at both ends of the inner stator core. In specific implementations, once the coordinate systems of the two laser trackers are aligned, the stator alignment software controls each laser tracker to collect coordinate information for the multiple targets on the outer stator end cap on the same side, as well as the multiple targets on the inner stator core on the same side.

[0096] It should be understood that in some examples, each laser tracker needs to accurately record the spatial position coordinates of the collected target, including: coordinate values ​​on the window side (X-axis), the upper side (Y-axis), the steam side (negative direction of the X-axis and positive direction of the Y-axis), and the excitation side (positive direction of the X-axis and positive direction of the Y-axis).

[0097] The coordinate data of the targets at both ends of the outer stator and the inner stator core is then processed using a least squares method or other mathematical fitting algorithm. For example, through fitting calculations, the best fitting circles corresponding to the outer and inner stator end faces are determined, and the coordinates of the center positions of the outer and inner stator end faces are then determined.

[0098] Finally, the determined coordinates of the inner stator's end face center position are compared and analyzed with those of the outer stator's end face center position to calculate their relative positional relationship. For example, the coordinate position deviations between the two in the steam side, excitation side, window side, and upper side directions are used. Based on the sign and magnitude of these coordinate position deviations, the spatial position deviation of the inner stator relative to the outer stator is fed back. For another example, a determination can be made as to whether the current position of the inner stator meets the alignment requirements based on pre-set alignment accuracy requirements. If not, the adjustment direction (e.g., movement along a positive or negative direction along a coordinate axis) and adjustment amount (specific displacement value) of the inner stator are determined based on the spatial position deviation of the inner stator relative to the outer stator. This adjustment information is then fed back to the operator in an intuitive manner, such as a two-dimensional graph, such as through a software interface display or other output device, to enable the operator to precisely adjust the inner stator to the correct alignment position.

[0099] Using the above method as an example, the generator's transfer matrix is ​​first obtained. Based on this matrix, the coordinate systems of two laser trackers installed at either end of the inner stator are aligned. A laser tracker is installed at each end of the inner stator to eliminate coordinate system differences between the different laser trackers. This allows the different laser trackers to be placed under the same measurement reference, ensuring that the measurement results from these different laser trackers can be processed within the same coordinate system. After aligning the coordinate systems of the two laser trackers, each is controlled to collect coordinate information from multiple targets installed at each end of the outer stator and multiple targets installed at each end of the inner stator's core.

[0100] Since the coordinate systems of the two laser trackers have been aligned, the end face center positions of the inner stator and the outer stator can be determined based on the coordinate information of multiple targets installed at both ends of the outer stator and the coordinate information of multiple targets installed at both ends of the iron core of the inner stator. Finally, based on the relative positional relationship between the end face center positions of the inner stator and the end face center positions of the outer stator, the centering indication information related to the inner stator is fed back to provide clear guidance information for the operator to adjust or install the inner stator. Furthermore, the operator can quickly adjust the center position of the inner stator according to the centering indication information, thereby improving the centering efficiency, reducing the risk of the inner stator being temporarily supported by the jack, and at the same time eliminating the errors introduced by manual measurement, thereby improving the operating stability and performance of the generator.

[0101] For a possible implementation, please refer to Figure 3 As shown, Figure 3 A schematic flow chart of a method for centering the inner stator of a generator provided by the present application is shown. S101: obtaining a transfer matrix of the generator, including:

[0102] S301, determining multiple inner cavity surfaces of an inner stator and a transfer station on each inner cavity surface.

[0103] In the above step S201, a target is pre-set on each transfer station, and the surfaces of the multiple cavities are respectively in different planes.

[0104] S302, controlling the first laser tracker of the two laser trackers to collect the first spatial position coordinates of the target on each transfer station from the first end of the inner stator, and controlling the second laser tracker of the two laser trackers to collect the second spatial position coordinates of the target on each transfer station from the second end of the inner stator.

[0105] S303: Calculate a transfer station matrix according to the first spatial position coordinates and the second spatial position coordinates of the target at each transfer station.

[0106] In some examples, in actual operation, multiple surfaces are selected in the inner cavity of the inner stator according to the structural characteristics of the inner stator and the measurement requirements. It should be understood that the multiple surfaces should be distributed as evenly as possible and be in different planes to ensure that the spatial characteristics of the inner stator can be fully reflected. On each selected inner cavity surface, several transfer stations are determined. Optionally, the position of the transfer station should have clear geometric characteristics to facilitate accurate installation of the target (such as a target ball with a magnetic seat). Each target is firmly mounted on the corresponding transfer station to ensure stable position during the measurement process.

[0107] In some examples, the first laser tracker measures the target on each transfer station from one end (first end) of the inner stator to obtain the spatial position coordinates of the target on each transfer station in the coordinate system of the first laser tracker (i.e., the first spatial position coordinates); at the same time, the second laser tracker measures the target on the same transfer station from the other end (second end) of the inner stator to obtain the spatial position coordinates of the target on each transfer station in the coordinate system of the second laser tracker (i.e., the second spatial position coordinates).

[0108] By using two laser trackers to collect the coordinate data of the target at each transfer station from different end points of the inner stator, the accuracy of calculating the transfer station matrix can be improved, so that the transfer station matrix can more accurately reflect the relationship between the two coordinate systems.

[0109] In some examples, mathematical principles such as linear algebra can be employed to calculate the first spatial position coordinates of each transfer point collected by the first laser tracker and the second spatial position coordinates of the corresponding transfer point collected by the second laser tracker through matrix operations and optimization algorithms, thereby obtaining a transfer matrix for unifying the coordinate systems of the two laser trackers. This allows for the conversion of coordinate data in the coordinate system of the first laser tracker to the coordinate system of the second laser tracker, and vice versa. It should be understood that during the calculation process, the coordinate data can be preprocessed, such as by removing outliers and performing data normalization, to improve the accuracy and stability of the calculation results.

[0110] In one possible implementation, after calculating the transfer station matrix based on the spatial position coordinates of the target at each transfer station, the method further includes:

[0111] Verification points on the surface of each inner cavity of the inner stator are determined, wherein each verification point is used to represent a new position point to which the target on each transfer station moves.

[0112] The first laser tracker is controlled to collect the third spatial position coordinates of the target at each verification point, and the second laser tracker is controlled to collect the fourth spatial position coordinates of the target at each verification point.

[0113] According to the transfer matrix, the third spatial position coordinates of the target at each verification point are converted from the coordinate system of the first laser tracker to the coordinate system of the second laser tracker to obtain the fifth spatial position coordinates.

[0114] According to the fourth spatial position coordinates and the fifth spatial position coordinates of the target at each verification point, it is determined whether the transfer matrix meets the requirements.

[0115] If it is determined that the transfer matrix meets the standards, the transfer matrix is ​​saved. If it is determined that the transfer matrix does not meet the standards, the transfer matrix is ​​re-verified or re-calculated to obtain a new transfer matrix that meets the standards.

[0116] On the surface of the multiple inner cavities of the inner stator identified above, a new position is selected for each transfer station as a verification point. For example, it can be selected by the operator or automatically generated by the stator alignment software. It should be understood that the selection of this verification point should be random and representative to a certain extent, and it should be ensured that both the first laser tracker and the second laser tracker can clearly measure the position of the target at the verification point. After determining the verification point automatically generated by the stator alignment software, the operator can be prompted to move the target from the original transfer station to the corresponding verification point and ensure that the target is securely installed.

[0117] By determining the verification points on the surface of each inner cavity of the inner stator, new measurement points are provided for verifying the accuracy of the transfer matrix, avoiding misjudgment of the accuracy of the transfer matrix due to the limitations of the transfer point data.

[0118] When the first laser tracker and the second laser tracker are in normal working condition and have been connected to the stator alignment software, the stator alignment software controls the first laser tracker to measure the target on each verification point from the first end of the inner stator, and obtains the third spatial position coordinates of the target at each verification point in the coordinate system of the first laser tracker; at the same time, the second laser tracker is controlled to measure the target on the same verification point from the second end of the inner stator, and obtains the fourth spatial position coordinates of the target at each verification point in the coordinate system of the second laser tracker.

[0119] The coordinates of the verification points are measured separately by two laser trackers to obtain the coordinate data of the verification points in different laser tracker coordinate systems, which provides rich information for accurately evaluating the accuracy of the transfer matrix and improves the reliability of verification.

[0120] Using stator alignment software, the third spatial coordinates of each verification point, collected by the first laser tracker, are input into the calculated transfer matrix calculation program. Through matrix multiplication and other operations, the third spatial coordinates of each verification point are converted from the coordinate system of the first laser tracker to the coordinate system of the second laser tracker, obtaining the corresponding fifth spatial coordinates. This allows the verification point coordinates in the first laser tracker's coordinate system to be converted to the coordinate system of the second laser tracker, allowing data in different coordinate systems to be compared within the same system.

[0121] By comparing the fourth spatial position coordinates of each verification point actually collected by the second laser tracker with the fifth spatial position coordinates obtained through the transfer matrix transformation, the coordinate differences in the steam side, excitation side, window side, and upper side directions are calculated. Based on a pre-set error range (i.e., compliance standard), it is determined whether the above coordinate differences are within an allowable range (e.g., less than a set value). If the coordinate differences of all verification points in each coordinate axis direction are less than the set value, the transfer matrix is ​​determined to be qualified; otherwise, that is, if the coordinate differences of any one or more verification points in each coordinate axis direction are greater than the set value, the transfer matrix is ​​determined to be unqualified.

[0122] By comparing and analyzing the coordinates of the verification points, the accuracy of the transfer matrix can be intuitively judged, the performance of the transfer matrix can be effectively evaluated, and the reliability of the transfer matrix in practical applications can be guaranteed, thereby improving the measurement accuracy of the inner stator alignment.

[0123] When it is determined that the transfer matrix meets the standards, the data of the transfer matrix is ​​saved in the storage space for subsequent use in the internal stator alignment operation. If the transfer matrix does not meet the standards, first check whether there are errors in the measurement process and data processing process, such as data input errors, equipment failures, etc. If there are no obvious errors, the verification point can be reselected, and the steps from step S301 to step S304 can be repeated to verify the transfer matrix again; if it still does not meet the standards after multiple verifications, it is necessary to recalculate the transfer matrix, that is, repeat the entire calculation process starting from determining the transfer point until a transfer matrix that meets the standards is obtained. This can ensure that the internal stator alignment operation can be carried out accurately and efficiently, reduce measurement errors and operational errors caused by transfer matrix problems, and improve the quality and efficiency of the generator internal stator alignment.

[0124] In one possible implementation, determining whether the transfer matrix meets the requirements based on the fourth spatial position coordinates and the fifth spatial position coordinates of the target at each verification point includes:

[0125] The fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point are compared to obtain an error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point.

[0126] When the error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point is less than or equal to a predetermined value, it is determined that the transfer matrix meets the requirements.

[0127] When the error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at any verification point is greater than a predetermined value, it is determined that the transfer matrix does not meet the standards.

[0128] In some examples, for each verification point, the fourth spatial position coordinates of the target actually collected by the second laser tracker (including coordinate values ​​in the directions of the steam side, the excitation side, the window side, and the upper side) are compared one by one with the fifth spatial position coordinates (including coordinate values ​​in the directions of the steam side, the excitation side, the window side, and the upper side) obtained after converting from the first laser tracker coordinate system to the second laser tracker coordinate system through the transfer matrix.

[0129] By calculating the difference between the two coordinate values ​​in each coordinate axis direction, that is, the error value. For example, for a certain verification point, the error value in the X-axis (window side) direction is the X-axis (window side) coordinate value of the fourth spatial position coordinate minus the X-axis coordinate value of the fifth spatial position coordinate; similarly, the error value of each verification point in the Y-axis (upper side) direction is calculated using the above method. The error generated by the transfer matrix during the coordinate transformation process is clearly presented in a quantitative manner, making the transfer matrix more accurate.

[0130] The error values ​​calculated for each verification point in the steam side, excitation side, window side, and upper side directions are compared with the predetermined values ​​in the corresponding coordinate axis directions. It should be understood that the predetermined values ​​are the allowable error ranges determined based on the measurement accuracy requirements and actual application conditions. If the error values ​​of all verification points in the steam side, excitation side, window side, and upper side directions are less than or equal to their respective corresponding predetermined values, it can be determined that the transfer matrix meets the accuracy requirements of the coordinate transformation, that is, the transfer matrix meets the standards. Through strict standard-compliant judgment, transfer matrices that meet the accuracy requirements can be screened out, avoiding the adverse effects of using transfer matrices with insufficient accuracy on subsequent internal stator alignment operations, and improving the reliability of measurement and alignment.

[0131] When comparing the error values ​​for each verification point on the steam side, excitation side, window side, and top side with the predetermined values, if any verification point's error value in any coordinate axis direction is found to be greater than the corresponding predetermined value, it can be determined that the transfer station matrix does not meet the accuracy requirements of the coordinate transformation, that is, the transfer station matrix does not meet the standard. Therefore, transfer station matrices that do not meet the accuracy requirements can be effectively eliminated, prompting timely correction or recalculation of substandard transfer station matrices, thereby ensuring that an accurate and reliable transfer station matrix is ​​always used during the internal stator alignment measurement, improving measurement accuracy and stability.

[0132] For a possible implementation, please refer to Figure 4 As shown, Figure 4 A schematic flow chart of a method for centering the inner stator of a generator provided by the present application is shown. In step S103, two laser trackers are controlled to collect coordinate information of multiple targets respectively installed at both ends of the outer stator, and coordinate information of multiple targets respectively installed at both ends of the iron core of the inner stator, including:

[0133] S401 , determining a plurality of targets respectively installed on each end cover of an outer stator of a generator, and a plurality of targets respectively installed on each end of an iron core of an inner stator.

[0134] In some examples, an end cap is provided at each end of the outer stator. The iron core is a component in the inner stator for providing a magnetic circuit, and the iron core includes a first end and a second end.

[0135] Optionally, in the examples of this application, the target can be a target ball with a magnetic base or other marking device that is easy to install and measure. In some examples, the positions of multiple target installations can be reasonably planned and determined on the two end covers of the outer stator based on the structural characteristics of the inner and outer stators of the generator and the needs of centering measurement. It should be understood that the installation position of the target should be representative and uniformly distributed so that the spatial position information of the outer stator end cover can be fully reflected. Similarly, multiple suitable positions are pre-determined at both ends of the iron core of the inner stator to install the target. By reasonably determining the target installation position, the accuracy and comprehensiveness of the measurement data can be guaranteed, thereby improving the accuracy of the subsequent calculation of the relative position relationship between the inner and outer stators.

[0136] S402, controlling the first laser tracker to collect the sixth spatial position coordinates of the multiple targets respectively installed on the first end cover of the outer stator, and the seventh spatial position coordinates of the multiple targets respectively installed on the first end of the iron core of the inner stator, wherein the first end cover of the outer stator is at one end with the first end of the iron core, and the second end cover of the outer stator is at one end with the second end of the iron core.

[0137] After the first laser tracker is properly installed at one end of the stator and in normal working order, and has been initialized using the stator alignment software, the stator alignment software controls the first laser tracker to sequentially measure multiple targets mounted on the first end cap of the outer stator, obtaining the sixth spatial position coordinate of each target in the first laser tracker's coordinate system. Next, using the same method, the first laser tracker is controlled to measure multiple targets mounted on the first end of the inner stator core, obtaining the seventh spatial position coordinate of each target in this coordinate system.

[0138] By using the first laser tracker to collect the spatial position information of the same end of the inner stator and the outer stator, combined with the subsequent second laser tracker to collect the spatial position information of the other end of the inner stator and the outer stator, key information such as the end face center position of the inner stator and the end face center position of the outer stator can be calculated comprehensively and accurately.

[0139] S403, controlling the second laser tracker to collect the eighth spatial position coordinates of the multiple targets respectively installed on the second end cover of the outer stator, and the ninth spatial position coordinates of the multiple targets respectively installed on the second end of the iron core of the inner stator.

[0140] After the first laser tracker is properly installed at one end of the stator and in normal working order, and has been initialized using the stator alignment software, the second laser tracker, using the stator alignment software, sequentially measures multiple targets mounted on the second end cap of the outer stator, recording the eighth spatial position coordinate of each target in the second laser tracker's coordinate system. The second laser tracker is then controlled to measure multiple targets at the second end of the inner stator's core, obtaining the ninth spatial position coordinate of each target in this coordinate system.

[0141] By setting up laser trackers at both ends of the inner and outer stators to measure the targets at both ends of the stators respectively, comprehensive and accurate spatial position data of the inner and outer stators are obtained, so as to facilitate the subsequent determination of the end face center positions and relative position relationships of the inner and outer stators, thereby improving the accuracy and efficiency of the centering operation.

[0142] For a possible implementation, please refer to Figure 5 As shown, Figure 5 A schematic flow chart of a method for centering an inner stator of a generator provided by the present application is shown. In step S105, centering indication information related to the inner stator is fed back based on the relative positional relationship between the end center positions of the inner stator and the outer stator, including:

[0143] S501 , determining whether the end face center position of the inner stator meets a predetermined centering requirement based on the relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator.

[0144] In some examples, the ideal relative positional relationship between the inner and outer stators can be determined in advance based on the design requirements and operating standards of the generator, for example, in the form of specific dimensions, tolerance ranges, etc. For example, it is specified that the deviations between the end center of the inner stator and the end center of the outer stator in the steam side (mm), excitation side (mm), top side (mm), and window side (mm) directions should be controlled within ±0.05mm.

[0145] In actual operation, the actual coordinates of the inner stator's end face center (i.e., the end face center position) are compared with the actual coordinates of the outer stator's end face center to calculate the actual deviation values ​​in each coordinate axis direction. These actual deviation values ​​are compared with the pre-set tolerance range. If the actual deviation values ​​in all coordinate axis directions are within the tolerance range, the end face center position of the inner stator is determined to meet the predetermined alignment requirements. If the actual deviation value in any coordinate axis direction is not within the tolerance range, the end face center position of the inner stator is determined to not meet the predetermined alignment requirements. By using clear criteria to determine whether the inner stator meets the predetermined alignment requirements, the accuracy and controllability of the inner stator centering operation are improved.

[0146] S502 : When the center position of the end face of the inner stator does not meet a predetermined centering requirement, determining at least one of an adjustment direction and an adjustment amount of the inner stator according to a relative position relationship.

[0147] In some examples, in actual operation, the adjustment direction or the adjustment amount may be determined according to specific circumstances, or both the adjustment direction and the adjustment amount may be determined.

[0148] In some examples, when it is determined that the position of the inner stator's end face center does not meet predetermined alignment requirements, the coordinate differences between the inner and outer stator end face centers in various directions are analyzed. With respect to the adjustment direction, if the coordinate value of the outer stator's center on a certain axis is greater than the corresponding coordinate value of the inner stator's center, for example, if the outer stator's coordinate on the X-axis is greater than that of the inner stator, then the inner stator needs to be moved along the X-axis (window side), i.e., in the positive direction toward the steam side. Alternatively, if the outer stator's coordinate on the X-axis is less than that of the inner stator, then the inner stator needs to be moved along the negative direction of the X-axis (window side), i.e., toward the excitation side, thereby determining the adjustment direction of the inner stator.

[0149] For the adjustment amount of the inner stator, calculate the absolute value of the coordinate difference in the corresponding axis direction. For example, the center coordinates of the inner stator are x1, y1, and the center coordinates of the outer stator are x2, y2. Then the adjustment amount of the inner stator in the X-axis direction is x1-x2, and the adjustment amount in the Y-axis (upper side) direction is y1-y2.

[0150] S503 : Feedback position adjustment information related to the inner stator according to at least one of the adjustment direction and the adjustment amount of the inner stator.

[0151] In the above step S503 , the position adjustment information is used to instruct to adjust the position of the inner stator based on at least one of an adjustment direction and an adjustment amount to obtain the inner stator after the position is adjusted.

[0152] In some examples, the stator alignment software can be used to present the position adjustment information to the operator in an intuitive manner. Figure 6a and Figure 6bAs shown, the adjustment direction of the inner stator in each coordinate axis direction is displayed in the form of a two-dimensional graph or table. For example, the adjustment direction can be indicated by an arrow in the two-dimensional graph; at the same time, the specific values ​​of the corresponding adjustment amount (i.e., offset) of the inner stator in the steam side, excitation side, window side, and upper side directions are displayed in the two-dimensional graph. For another example, the offset result can also be displayed in the form of text and numerical values ​​in the form of a table to inform the operator how far the inner stator needs to be moved in the steam side, excitation side, window side, and upper side directions, and which directions to adjust accordingly. Then, the operator adjusts the position of the inner stator using corresponding adjustment equipment (such as a hydraulic jack, etc.) based on the position adjustment information fed back by the stator alignment software, so as to reduce errors and blindness in the adjustment process of the inner stator, and help to quickly achieve the predetermined alignment requirements for the inner stator.

[0153] S504: When the center position of the end face of the inner stator meets the predetermined centering requirement, feedback is given of installation instruction information related to the inner stator.

[0154] When the inner stator's end face center position meets the predetermined alignment requirements, the stator alignment software provides the operator with feedback regarding the inner stator's installation instructions. For example, the software can display a prompt prompting the operator to perform the alignment operation, such as "The current position meets the predetermined alignment requirements. The inner stator alignment operation can begin." The software also provides relevant data records for the alignment operation, such as the measured coordinates of the inner and outer stator end faces and any changes in the data during the adjustment process, for the operator to review and archive.

[0155] Through the example of this application, based on the fact that the end face center position of the inner stator meets the predetermined alignment requirements, corresponding alignment indication information related to the inner stator, such as position adjustment information or installation indication information, etc., is fed back, which can improve the operability, accuracy and efficiency of the inner stator alignment adjustment or alignment operation.

[0156] In one possible implementation, Figure 7 As shown, in step S503, after feeding back the position adjustment information of the inner stator according to at least one of the adjustment direction and the adjustment amount of the inner stator, the method further includes:

[0157] S701 , controlling two laser trackers to collect new coordinate information of a plurality of targets respectively installed at both ends of the iron core of the inner stator after position adjustment.

[0158] S702, based on the coordinate information of multiple targets installed at both ends of the outer stator and the new coordinate information of multiple targets installed at both ends of the iron core of the inner stator after the position is adjusted, determine the end face center position of the inner stator and the end face center position of the outer stator after the position is adjusted.

[0159] S703: Determine a new relative positional relationship between the center position of the end face of the inner stator and the center position of the end face of the outer stator after the positions are adjusted.

[0160] S704, when the end face center position of the inner stator after the adjustment is determined according to the new relative position relationship does not meet the predetermined alignment requirement, determine at least one of the adjustment direction and adjustment amount of the inner stator after the adjustment is determined according to the new relative position relationship.

[0161] S705 , feeding back position adjustment information related to the inner stator after the position adjustment according to at least one of the adjustment direction and the adjustment amount of the inner stator after the position adjustment, until the end face center position of the inner stator after the position adjustment meets the predetermined centering requirement.

[0162] After the operator adjusts the inner stator's position based on the previously fed-back position adjustment information, ensure that both laser trackers are still in normal operation and connected to the stator alignment software. The stator alignment software controls the first laser tracker to measure multiple targets mounted on one end of the inner stator's core, obtaining the new coordinate information for each target in the first laser tracker's coordinate system. Simultaneously, the second laser tracker is controlled to measure the corresponding multiple targets from the other end of the inner stator's core, obtaining the new coordinate information for each target in the second laser tracker's coordinate system.

[0163] Afterwards, the previously collected and saved coordinate information of the targets at both ends of the outer stator and the newly obtained coordinate information of the targets at both ends of the inner stator core after the position adjustment are used. Figure 8 The two-dimensional schematic diagrams showing the end center positions of the inner and outer stators are shown. Using mathematical algorithms such as least-squares circle fitting, the coordinate data of the outer stator's target is processed to fit a circle, thereby obtaining the coordinates of the outer stator's end center position. Similarly, the coordinate data of the target on the inner stator's core after adjustment is processed to fit the coordinates of the inner stator's end center position. By accurately determining the end center positions of the inner and outer stators, the alignment of the inner stator after adjustment can be clearly understood.

[0164] Next, compare the coordinates of the center of the inner stator's end face after adjustment with those of the outer stator's end face. Calculate the coordinate differences between the two in the steam, excitation, window, and upper directions, analyzing their sign and magnitude. Based on these coordinate differences, determine the new relative position of the inner stator relative to the outer stator after adjustment. For example, determine the direction and degree of deviation of the inner stator from the outer stator. This new relative positional relationship can promptly identify any remaining issues after the inner stator's position adjustment, providing guidance for further adjustments and helping to improve the accuracy of the inner stator alignment operation.

[0165] When it is determined based on the new relative position relationship that the position of the end face center of the inner stator after the adjustment does not meet the predetermined alignment requirements, the coordinate difference between the inner and outer stator end face centers in each coordinate axis direction is analyzed again. The adjustment direction is determined based on the positive or negative value of the coordinate difference. For example, if the coordinate of the inner stator in the X-axis direction (window side) is smaller than the coordinate of the outer stator in the X-axis direction (window side), and the coordinate difference between the two exceeds the predetermined range, the inner stator needs to be moved along the positive direction of the X-axis. The adjustment amount is calculated based on the absolute value of the coordinate difference, such as the adjustment amount in the X-axis direction is the absolute value of the coordinate difference. This allows the operator to make targeted adjustments to the inner stator according to the new situation, gradually narrowing the gap between the inner stator and the predetermined alignment requirements, and improving the accuracy and efficiency of the inner stator alignment operation.

[0166] In some examples, depending on actual conditions, you can choose to determine the adjustment direction or the adjustment amount, or you can determine the adjustment direction and the adjustment amount.

[0167] Finally, the determined adjustment direction and amount of the adjusted inner stator are presented as position adjustment information to the operator through the stator alignment software in an intuitive manner, such as by displaying the adjustment direction as a two-dimensional diagram and the adjustment amount as a numerical value on the software interface. Based on this position adjustment information, the operator uses appropriate adjustment equipment (such as a hydraulic jack) to reposition the inner stator. After re-adjustment, steps S701 to S704 are repeated to collect new coordinate information, calculate the inner stator end face center position and the outer stator end face center position, determine the relative position relationship, and determine whether the predetermined alignment requirements are met. If the new relative position relationship determines that the end face center position of the adjusted inner stator does not meet the requirements, the adjustment direction and amount are further determined and the position adjustment information is fed back, repeating the cycle until the end face center position of the adjusted inner stator meets the predetermined alignment requirements. Through continuous adjustment cycles, the inner stator alignment accuracy is ultimately ensured to meet the predetermined requirements, improving the quality and reliability of the generator's inner stator alignment operation and ensuring the normal operation and performance of the generator.

[0168] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0169] Corresponding to the inner stator centering method of the generator in the above embodiment, Figure 9 This is a schematic diagram of the structure of a generator stator centering processing device provided by an embodiment of the present application. The device can be implemented as part or all of a computer device by software, hardware, or a combination of both. The computer device can be Figure 10 Electronic devices shown.

[0170] Reference Figure 9 , the internal stator centering processing device of the generator includes:

[0171] The acquisition unit 901 is configured to acquire a transfer matrix of a generator, wherein an inner stator and an outer stator of the generator are coaxially arranged, and the inner stator is located inside the outer stator.

[0172] The alignment unit 902 is used to align the coordinate systems of two laser trackers provided at both ends of the inner stator according to the transfer matrix, wherein one laser tracker is provided at each end of the inner stator.

[0173] The control unit 903 is used to control the two laser trackers to collect the coordinate information of multiple targets installed at both ends of the outer stator and the coordinate information of multiple targets installed at both ends of the iron core of the inner stator after aligning the coordinate systems of the two laser trackers.

[0174] The determination unit 904 is used to determine the end face center position of the inner stator and the end face center position of the outer stator based on the coordinate information of multiple targets installed at both ends of the outer stator and the coordinate information of multiple targets installed at both ends of the iron core of the inner stator.

[0175] The feedback unit 905 is used to feed back the centering indication information related to the inner stator according to the relative position relationship between the end face center position of the inner stator and the end face center position of the outer stator.

[0176] It is understood that the embodiment of the generator internal stator centering device and any implementation thereof respectively correspond to the embodiment of the generator internal stator centering method and any implementation thereof. The technical effects corresponding to the embodiment of the generator internal stator centering device and any implementation thereof can be referenced to the technical effects corresponding to the embodiment of the generator internal stator centering method and any implementation thereof, and are not further elaborated here.

[0177] It should be noted that the internal stator centering processing device of the generator provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0178] The functional units and modules in the above embodiments may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The above integrated units may be implemented in the form of hardware or software functional units. In addition, the specific names of the functional units and modules are only for the purpose of distinguishing them from each other and are not intended to limit the scope of protection of the embodiments of this application.

[0179] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of this application. Their specific functions and technical effects can be found in the method embodiment section and will not be repeated here.

[0180] An embodiment of the present application further provides an electronic device, the electronic device comprising one or more processors and a memory;

[0181] The memory is coupled to one or more processors, and is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the electronic device to execute the aforementioned method for processing the inner stator centering of the generator.

[0182] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 1000 can be a mobile phone, a smart screen, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (AR) device, a virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a projector, or a communication device such as a server, a storage device, a base station, or a smart car. The embodiments of the present application do not impose any restrictions on the specific type of electronic device.

[0183] The memory 1001 can be used to store computer software programs 1002 and modules. The processor 1003 executes various functional applications and data processing of the electronic device by running the software programs and modules stored in the memory 1001. The memory 1001 can mainly include a program storage area and a data storage area. The program storage area can store an operating system, at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the electronic device (such as audio data, a phone book, etc.). In addition, the memory 1001 can include a high-speed random access memory and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0184] Among them, the processor 1003 may include one or more processors such as a central processing unit, an application processor (AP), a baseband processor, etc. The processor can be the nerve center and command center of the wireless router. The processor 1003 can generate an operation control signal based on the instruction operation code and the timing signal to complete the control of instruction fetching and execution. The memory 1001 can be used to store computer executable program code, and the executable program code includes instructions. The processor 1003 executes various functional applications and data processing of the network device by running the instructions stored in the memory. The memory 1001 may include a program storage area and a data storage area, such as storing data of a sound signal to be played. For example, the memory can be a double data rate synchronous dynamic random access memory DDR or a flash memory Flash.

[0185] An embodiment of the present application also provides a computer-readable storage medium, in which computer instructions are stored; when the computer-readable storage medium is run on an electronic device, the electronic device executes the internal stator centering processing method of the generator shown above.

[0186] Computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. A computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. Available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media (e.g., solid state drives (SSDs)).

[0187] An embodiment of the present application further provides a computer program product comprising computer instructions. When the computer program product is run on an electronic device, the electronic device can execute the aforementioned method for processing the inner stator centering of the generator.

[0188] The computer storage medium and computer program product provided in the above-mentioned embodiments of the present application are used to execute the method provided above. Therefore, the beneficial effects that can be achieved can refer to the corresponding beneficial effects of the method provided above, and will not be repeated here.

[0189] In the above embodiments, it can also be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (such as: coaxial cable, optical fiber, data subscriber line (Digital Subscriber Line, DSL)) or wireless (such as: infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrations. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital versatile discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0190] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0191] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments applied for herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0192] In the embodiments provided in this application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0193] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0194] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A method for centering the inner stator of a generator, characterized in that: include: Acquire a transfer station matrix of a generator, wherein an inner stator and an outer stator of the generator are coaxially arranged, and the inner stator is located inside the outer stator; Aligning the coordinate systems of two laser trackers disposed at both ends of the inner stator according to the transfer station matrix, wherein one laser tracker is disposed at each end of the inner stator; After aligning the coordinate systems of the two laser trackers, controlling the two laser trackers to respectively collect coordinate information of a plurality of targets respectively installed at both ends of the outer stator, and coordinate information of a plurality of targets respectively installed at both ends of the iron core of the inner stator; Determining the center position of the end face of the inner stator and the center position of the end face of the outer stator based on the coordinate information of multiple targets respectively installed at both ends of the outer stator and the coordinate information of multiple targets respectively installed at both ends of the iron core of the inner stator; Centering indication information related to the inner stator is fed back according to the relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator.

2. The method according to claim 1, characterized in that The step of obtaining the transfer matrix of the generator includes: Determining a plurality of inner cavity surfaces of the inner stator and a transfer station on each inner cavity surface, wherein a target is pre-set on each transfer station, and the plurality of cavity surfaces are respectively in different planes; controlling a first laser tracker of the two laser trackers to acquire a first spatial position coordinate of a target on each of the transfer stations from a first end of the inner stator, and controlling a second laser tracker of the two laser trackers to acquire a second spatial position coordinate of a target on each of the transfer stations from a second end of the inner stator; The transfer station matrix is ​​calculated based on the first spatial position coordinates and the second spatial position coordinates of the target on each transfer station.

3. The method according to claim 2, characterized in that After calculating the transfer station matrix based on the spatial position coordinates of the target at each transfer station, the method further includes: Determining a verification point on the surface of each inner cavity of the inner stator, wherein each verification point is used to represent a new position point to which the target on each transfer station moves; controlling the first laser tracker to acquire the third spatial position coordinates of the target at each of the verification points, and controlling the second laser tracker to acquire the fourth spatial position coordinates of the target at each of the verification points; According to the transfer matrix, the third spatial position coordinates of the target at each verification point are converted from the coordinate system of the first laser tracker to the coordinate system of the second laser tracker to obtain fifth spatial position coordinates; determining whether the transfer matrix meets the requirements according to the fourth spatial position coordinates and the fifth spatial position coordinates of the target at each verification point; If it is determined that the transfer matrix meets the standards, the transfer matrix is ​​saved; if it is determined that the transfer matrix does not meet the standards, the transfer matrix is ​​re-verified or re-calculated to obtain a new transfer matrix that meets the standards.

4. The method according to claim 3, characterized in that The determining whether the transfer matrix meets the requirements based on the fourth spatial position coordinates and the fifth spatial position coordinates of the target at each verification point includes: Comparing the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point to obtain an error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point; When the error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at each verification point is less than or equal to a predetermined value, determining that the transfer matrix meets the requirements; When the error value between the fourth spatial position coordinate and the fifth spatial position coordinate of the target at any one of the verification points is greater than a predetermined value, it is determined that the transfer matrix does not meet the standards.

5. The method according to claim 1, wherein The controlling the two laser trackers to respectively collect coordinate information of a plurality of targets respectively installed at both ends of the outer stator, and coordinate information of a plurality of targets respectively installed at both ends of the iron core of the inner stator, comprises: Determining a plurality of targets mounted on each end cap of an outer stator of the generator, and a plurality of targets mounted on each end of an iron core of an inner stator, wherein an end cap is provided at each end of the outer stator, and the iron core is a component of the inner stator for providing a magnetic circuit; controlling a first laser tracker of the two laser trackers to collect sixth spatial position coordinates of a plurality of targets respectively mounted on a first end cap of the outer stator, and seventh spatial position coordinates of a plurality of targets respectively mounted on a first end of an iron core of the inner stator, wherein the first end cap of the outer stator is located at one end of the first end of the iron core, and the second end cap of the outer stator is located at one end of the second end of the iron core; The second laser tracker of the two laser trackers is controlled to collect the eighth spatial position coordinates of the multiple targets respectively installed on the second end cover of the outer stator, and the ninth spatial position coordinates of the multiple targets respectively installed on the second end of the iron core of the inner stator.

6. The method according to claim 1, wherein Feedback of alignment indication information related to the inner stator based on the relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator includes: determining whether the end face center position of the inner stator meets a predetermined centering requirement based on a relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator; When the center position of the end face of the inner stator does not meet the predetermined centering requirement, determining at least one of an adjustment direction and an adjustment amount of the inner stator according to the relative position relationship; Feedback position adjustment information related to the inner stator based on at least one of an adjustment direction and an adjustment amount of the inner stator, wherein the position adjustment information is used to indicate that the position of the inner stator is adjusted based on at least one of the adjustment direction and the adjustment amount to obtain an inner stator after the adjustment; When the center position of the end face of the inner stator meets the predetermined centering requirement, installation instruction information related to the inner stator is fed back.

7. The method according to claim 6, characterized in that After feeding back position adjustment information of the inner stator according to at least one of an adjustment direction and an adjustment amount of the inner stator, the method further includes: Controlling the two laser trackers to collect new coordinate information of a plurality of targets respectively installed at both ends of the iron core of the inner stator after the position adjustment; Determining the center position of the end face of the inner stator and the center position of the end face of the outer stator after the adjustment based on the coordinate information of the multiple targets respectively installed at both ends of the outer stator and the new coordinate information of the multiple targets respectively installed at both ends of the iron core of the inner stator after the adjustment; Determining a new relative positional relationship between the end face center position of the inner stator and the end face center position of the outer stator after the adjustment; If it is determined according to the new relative position relationship that the position of the center of the end face of the inner stator after the adjustment does not meet the predetermined centering requirement, determining at least one of an adjustment direction and an adjustment amount of the inner stator after the adjustment according to the new relative position relationship; According to at least one of the adjustment direction and the adjustment amount of the inner stator after the position adjustment, position adjustment information related to the inner stator after the position adjustment is fed back until the end face center position of the inner stator after the position adjustment meets the predetermined alignment requirement.

8. A generator inner stator centering device, characterized in that: include: an acquisition unit, configured to acquire a transfer station matrix of a generator, wherein an inner stator and an outer stator of the generator are coaxially arranged, and the inner stator is located inside the outer stator; An alignment unit, configured to align the coordinate systems of two laser trackers disposed at both ends of the inner stator according to the transfer matrix, wherein one laser tracker is disposed at each end of the inner stator; a control unit, configured to, after aligning the coordinate systems of the two laser trackers, control the two laser trackers to respectively collect coordinate information of a plurality of targets respectively mounted at both ends of the outer stator, and coordinate information of a plurality of targets respectively mounted at both ends of the iron core of the inner stator; a determination unit, configured to determine the center position of the end face of the inner stator and the center position of the end face of the outer stator based on the coordinate information of the multiple targets respectively installed at both ends of the outer stator and the coordinate information of the multiple targets respectively installed at both ends of the iron core of the inner stator; A feedback unit is used to feed back centering indication information related to the inner stator based on the relative position relationship between the end face center position of the inner stator and the end face center position of the outer stator.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the electronic device implements the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed, causes the method according to any one of claims 1 to 7 to be performed.

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